From Lac La Ronge Country: The Life and Photographic Legacy of Fur Trader Alan Sturley Nunn by Graham A. MadDonald.
I haven't read this yet but Ontario paddler Keith Nunn just found out that one of is early Canadian relatives was a fur trader and Photographer out west in La Ronge Country Sask.
There is a book out available on Amazon
http://www.amazon.ca/gp/aw/d/0991917812$29.95
For me it is a very cool activity/hobby to put yourself in another time period.
and to have photo from that period to compare then and now brings it much closer to home when you paddle.
And a lake named after your Uncle, even more cool.
http://www.amazon.ca/gp/aw/d/0991917812Jeff